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Safety interlock for circuit breaker housing assembly and extraction device

a safety interlock and circuit breaker technology, which is applied in the direction of air-break switches, switchgear with horizontal withdrawal, high-tension/heavy-dress switches, etc., can solve the problems of circuit breaker damage, circuit breaker may be removed, and technician injury

Inactive Publication Date: 2006-06-06
EATON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage to this system is that a circuit breaker may be removed when no extraction device is present or when the extraction device is not properly aligned.
This procedure, especially when performed by a single person, is likely to cause injury to the technician and damage to the circuit breaker.

Method used

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  • Safety interlock for circuit breaker housing assembly and extraction device
  • Safety interlock for circuit breaker housing assembly and extraction device
  • Safety interlock for circuit breaker housing assembly and extraction device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014]As shown in FIG. 1, a circuit breaker removal and insertion assembly 10 includes a circuit breaker housing assembly 12 and a circuit breaker extraction device 14. The circuit breaker housing assembly 12 is structured to enclose a roll-out circuit breaker 16 (represented by a circuit breaker front panel). The roll-out circuit breaker 16 includes a set, preferably two pairs, of rail wheels 18 structured to engage, that is, roll on, a pair of rails 28 (described below). The roll-out circuit breaker 16 may also include a set of floor wheels 20. The circuit breaker housing assembly 12 includes a frame assembly 22 and a plurality of walls 24 forming an enclosure 26 having a front side 27, which is typically a door. Disposed within the enclosure 26 is a pair of generally parallel rails 28 structured to support a roll-out circuit breaker 16. The housing assembly rails 28 extend from the housing assembly front side 27 to the back side. In this configuration, the circuit breaker 16 may ...

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PUM

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Abstract

An interlock assembly for a circuit breaker housing assembly and a circuit breaker extraction device wherein the interlock assembly has a first and second component. The first component is coupled to a circuit breaker housing assembly and the second component is coupled to a circuit breaker extraction device. The first component includes a rail obstruction assembly that is structured to move between a first position, wherein the movable rail obstruction element blocks a circuit breaker wheel from traveling over a circuit breaker housing assembly rail, and a second position, wherein the movable rail obstruction element is spaced from the circuit breaker housing assembly rail so that a wheel may travel over the circuit breaker housing assembly rail. The second component is structured to engage the first component when the circuit breaker extraction device is brought adjacent to the circuit breaker housing assembly and to move the movable rail obstruction element from the first position to the second position.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to a circuit breaker extraction device and, more specifically, to an interlock assembly having components on both the circuit breaker cell and the extraction device which are structured to prevent the circuit breaker from being removed from the cell unless the cell and the extraction device are locked together.[0003]2. Background Information[0004]Large circuit breakers are typically disposed in an enclosure or housing assembly. The circuit breaker, which may weigh as much as 1000 lbs., is typically disposed on a set of rollers, or a circuit breaker frame having rollers. The rollers are structured to engage a pair of rails extending from the front to the back of the housing assembly. The rollers and / or the housing assembly rails typically include a break or similar device structured to prevent the circuit breaker from moving. In this configuration, the circuit breaker may be inserted and rem...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): H02B11/00
CPCH02B11/133
Inventor JENKINS, WALTER OLIVERMARCHAND, FRANCOIS JEANKREVOKLICH, ROBERT NICHOLASHOEGLE, JOHN JOSEPH
Owner EATON CORP
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